title: Semiclassical evaluation of frequency splittings in coupled optical microdisks.
abstract: When two microdisks are placed close to each other and the evanescent fields of their whispering gallery modes are overlapped, a strong coupling can be induced in the modes and lead to a doublet state. We attempt to evaluate the frequency splittings of the doublets by applying a semiclassical analysis in the regime of small wavelengths. Since a whispering gallery mode in a microdisk is a leaky mode, an established semiclassical method that deals with coupled closed systems is modified. As a result, we attain an analytic formula which can conveniently compute the frequency splittings of coupled whispering gallery modes. The derived formula is verified by demostrating a perfect agreement with numerical solutions of Maxwell's equations.
authors.forename: Jeong-Bo
authors.initials: JB
authors.lastname: Shim
authors.forename: Jan
authors.initials: J
authors.lastname: Wiersig